[gnome-love] License of images

[אנטולי קרס נר <tombackton gmail com>]

Hello,

I'm writing a free software (GPLv3) "mine sweeper" game for homework in
Java, and I'd like to use icons from Gnome Mines (and mimic its user
interface).

What license do the images and data files of Gnome apps have? I didn't
see any special license for the images (tried Googling it, read the help
in Yelp, looked at the Gir repo, looked at the "thanks" frame). Do they
use GPL too?

Anatoly